MATHEMATICS HIGH SCHOOL

Help I just learned how to do this and it’s so hard

Answers

Answer 1

Answer:

Answer: the answer is either the first one or the third not exactly sure

Step-by-step explanation:

Answer 2

Answer:

Answer:

AU9NJ-BLVHV-TCLJS-54YTB

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Kevin is going to purchase sod for his backyard (see diagram below). How many square feet of sod will Kevin need?
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Jada has a meal in a restaurant. She adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00.c) They actually pay $52.99. The additional $7 is a tip for the server. What percentage of the subtotal is the tip?

A deep sea diver’s depth is currently 30 m below the surface of the water.Which expressions represent a change in depth of d meters?

Choose exactly two answers that are correct.

A. -30d

B. -30 - d

C. -30/d

D. -30 + d

Answers

the answer is A and D -30+d but you can also get the answer by multiplying like lets say d=2 30+30=60 and 30*2=60.

03 MG)In AEFG and sYXZ,m F mix and mE m_Y. IfmZE = 62° and m_X = 80°, what is the measure of ZY?

Answers

142 is the correct answer that

A model rocket is launched from a roof into a large field. The path of the rocket can be modeled by the equation y equals negative 0.04x squared plus 8.3x plus 4.3, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. How far horizontally from its starting point will the rocket land? Round your answer to the nearest hundredth meter. (1 point)
208.02 m
416.03 m
0.52 m
208.19 m

Answers

ok

y=-0.04x^2+8.3x+4.3
when the rocket reaches the ground (when height=0, ie when y=0), then the rocket will land, find the x coordinate

set y=0
0=-0.04x^2+8.3x+4.3
use quadratic formula
if you have ax^2+bx+c=0, then
x= $\frac{-b+/- \sqrt{b^(2)-4ac} }{2a}$
a=-0.04
b=8.3
c=4.3
x= $\frac{-8.3+/- \sqrt{8.3^(2)-4(-0.04)(8.3)} }{2(-0.04)}$
x=208.017 or -0.516785
xrepresents horizontal distance
you cannot have a negative horizontal distance unless you fired and theh wind blew it backwards
therefor x=280.017 is the answer
208.02 m

If h(x) = −3x − 10, find h(−3).

Answers

Answer:

Step-by-step explanation:

h=-3

-3(-3)= 9

Answer:

h(-1)

h= -1

Step-by-step explanation:

Debbie is making an abstract painting with two triangles. The dimensions of the painting are shown below:Two triangles share the same height of 8 inches. One triangle has a base of 6 inches and the other is 10 inches.

The total area of the two triangles is _____ square inches.

Answers

Debbie's abstractpainting are two in numbers both having the same height. since we know the area of a triangle to be

Area = 1/2*Base*Height

Total area =Area of Triangle A+ Area of Triangle B

= 24+40

=64 square inches

Given data

Both Triangles share the same height = 8 inches

For Triangle A

Base = 6 inches

Area = 1/2 Base*Height

Area = 1/2*8*6

Area = 24 square inches

For Triangle B

Base = 10 inches

Area = 1/2 Base*Height

Area = 1/2*8*10

Area = 40 square inches

Total = 24+40

Total = 64 square inches

Learn more about area of triangle here

brainly.com/question/2607596

The surface of the triangle count formula
A = b*h*1/2
A - area
b - base
c - height
The first triangle
A₁ = b₁*h = 6in * 8in *1/2= 24in²

The second triangle
A₂ b₂*h = 10in * 8in*1/2 = 40in²

The total area of the two triangles is 24in² + 40in² = 64 square inches

one person can paint a room in 5 hours and the other takes 8 hours working together how long will it take the two of them if they're working together please work the problem out and explain it to me

Answers

ok so find how much work each can do per hour

irst person is 5 hours to do all room
therefor
1 hour=1/5 room

2nd person takes 8 hours to do all room
therefor
1 hour=1/8 room

since working together, add times

1 hour=1/5+1/8
make denoms same
1hour=8/40+5/40=13/40

13/40 room times x hours=1 whole room
multiply both sides by 40/13 to cleaf raction (13/40 times 40/13=520/520=1)

xhours=40/13hours
xhours=3 and 1/13 hours

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Three of the angles of a quadrilateral are 120 48 and 92 what is the size of the 4th angle